Alfalfa-cutter.



J. .TORGENSEN AL'LFA GUTTER.

APPLICATION FILED pao. 2, 190s.

943,308. @atented Dec. l, i909.

3 SHEETS-SHEET l.

J. JORGENSEN. ALIALPA GUTTER.

` Y APPLICATION FILED DBO. 2, 1908. 943,308.

Patented Dec. 14, 1909.

3 SHEETS-SHEET 2.

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` Witnesses:

A J., JORGJJNSEN;l

AL'ALFA CUTTER. APPLIGATIOH FILED DEG. 2, 1908. YE i @a f Patented Dec. 14,1909.

a sHBETssHEBT s.

uniform tension and the raising and lowering of the cylinder will not interfere with the driving thereof. At the rearward ends of the radius bars 29 a cross-bar 30 is conneeted therewith, the said cross-bar extending through slots in the ,frames 10 and, between the said frames, carrying the shoe plate 3l. The connections between the ends of the cross-bar and the radius bars are made by means of bolts passing through slots in the upturned ends of the cross-bar, so that slight adjustment may be made thereby to change the relation of the crossbar and shoe-plate to the feed-cylinder.

'lhe cutting-cylinder is made up of a series of knife-plates 32 mounted between end-plates 33 and on a tube 34 which passes over the shaft 8. Adjoining one of the endplates 33 a wheel 35 is secured to the shaft, as shown in Fig. t. On the said end-plate and wheel are peripheral flanges which are connected by means of a brealipin 36. rl`he said pin is the sole driving connection between the shaft 8 and the cylinder and is so proportioned that it will be sheared olf and the connection broken should the cylinderl be subjected to any undue stress, as, for example, should materials be fedathereinto too rapidly or some hard foreign kbody be contained in the material. The knife-plates 32 consist of circular plates which are provided on their peripheries with teeth, the form of which is best, shown in Figs. and t3. The vlplates are larranged in pans, the adjoining sides of each pair of plates being perfectly tlat aml litt-ing together', while the outer faces of the teeth of each pair of plates are beveled so that V-shaped spaces are left between the teeth of each adjoining pair of plates. The front faces of the teeth are given a slight forward rake or inclination both longitmlinally and circumferentially of the cylinder, and the backs of the teeth, when Viewed from the end of the cylinder, are of substantially spiral form. The plates are secured to each other and to the end-plates 3 by bolts 2ST which pass through holes lie in the plates, said holes being arranged in a circle concentric to the shaft'. 'llhe number of said holes 85% is made three or more times that of the bolts and in each plate the holes are made the same, with reference to the front edges of the teeth. Thus, by passing the bolts through different sets of the holes in the adjoining pairs of plates, the front edges of the teeth on the adjoining pairs of plates I may be brought into a staggered or non alined relation to each other longitudinally of the cylinder'. Above the cutting-cylinder a cross-bar Bt) is secured between the frames 10 and on said bar the ledger-blades 40 are adj ustabl y secured by bolts passing through slots therein. 'lhe ends of said ledgerblades are tt-shaped and extend between the teeth of the cutting-cylinder', the edges thereof being `brought to a shearing relation with the edges of the cylinder teeth. The cylinder teeth may be sharpened by removing the knife-plates from the cylinder and grinding the front faces of the teeth. The ledger-blades may be sharpened by grinding the end-faces thereof, the material removed by grinding heilig compensated by adjusting the bodies` of the blades in closer to the cylinder.

l? rom the cross-bar 39 a perforate casing or screen l1 extends around the cylinder to the front end of the feed-table which terminates in a plate -l having V-shaped teeth on the front edge thereof which extend in between the cylinder teeth similarly to the ledger-blades but not. close enough to be in a shearing relation to said teeth. Extending downwardly from the screen ll is a hopper' i3 adapted to receive the materials which pass through the screen. A removable casing or cover ,il is disposed over the cylinders, following the outline of and being connected with the side-frames 10, as shown. f'

'The operation of the machine will be 'apparent from the foregoing. Materials placed on the feed-table are carried forward by the toothed chains l, being directed by the lshoe-plate :ll so as to pass below the feed-cylimler, the teeth of which engage the material and forcel it into engagement with the cutting-cylinder teeth. Loose materials in passing below the feedcylinder are coinpre ed more or less thereby, but, should the material under the cylinder. at any time exert a sutiicient upward pressure thereon, the cylinder will be lifted thereby, swinging on the radius bars 2t, as described. The shoe-plate. 31, also being connected with the radius bars, will swing upward with the cylinder so as to remain in the same position relative thereto. The material when engaged by the rz king or hook-like teeth of the cylinder will be carried thereby into engagement, with the ledger-blades Lit) and cut in passing througlr the same. A portion ot' the material rei-aining in engagement with each of the cylinder teeth, the same i will be carried thereby into the chamber between the cylinder and the screen 41, where such of the material as has been cut to particles small enough to pass through -the screen will escape through the same and into the hopper tit The uncut portions of the material will continue to be carried around by the cylinder until all are reduced to particles small enough to escape through the screen. 1

New, having described my invention, what claim and desire'to secure by Letters Patent is: r a l. ln a machine of the class described; in combination, cutting devices eomprisinga i o'o toothed cylinder and ledger-blades arranged 'in shearing relation thereto, a feed-table.

means for actuating materials over said table toward the cutting` devices, a toothed eedeylinder arranged over the feed-table adjacent to the cutting devices, flexible driving` means 'for said feed-cylinder arranged to permit a raising` and lowering thereof relative to the feed-table, ay shoe-platc arranged acl-jacent. to the feed-cylinder for directing materials thereunder, and means connecting the slice-plate and cylinder whereby when the cylinder is raised the shoe-plate will be maintained in the saine position relative to the cylinder.

2. ln a machine of the class described. the combination with feeding devices ot' a eutting cylinder consisting of a series of plates each havingr teeth formed on the periphery thereof, the plates being arranged in pairs, the teeth of each pair of plates coinciding in' position longitudinally of the cylinder and -forming in etlect single teeth having concave iront faces and inclined cutting edges, the teeth of the dili'erent pairs of plates .being in non-alined positions Ylongitudinally et the cylinder, and ledgenblades of a torni :ulapting' each of the saine to ex tend between the teeth ofadjoiningg pairs of the plates and iu shearing` relation to the cuttingl edges ot' said teeth, each of said ledger-bladesl being independently adjust,-

able in a direction substantially radial to the cylinder. f

3. In a machine of the class described, a cutting-cylinder consisting of a series of plates each having on thc periphery thereof a plurality ot' raking or overhanging teeth with inclined cutting'edges, the plates being arranged in pairs, the teeth of each pair of plates coinciding in position longitudinally of the cylinder, each of the plates haring a series of holes formed therein and in constant relation to the cutting edges et the teeth. and connecting' bolts passing longitudinally ot the cylinder through some of the holes -in each of the plates.

4. ln a machine of the class described, a cutting' cylinder consisting of a series ot knife-plates, end-plates, and bolts passing longitudinally of the cylinder through said end-plates and knife-plates, a wheel secured to the cylinder shaft adjoining' oneY ot' said end-plates. and a break-pin connecting said wheel and end-plate for the purpose set forth.

ln testimony whereof l have hereunto subscribed my name in the presence of two Witnesses.

JRGEN JOB( l ENSEU.

Witnesses:

D. (l BARNELL, lloy (if. Kna'rz. 

